A model is any representation of an object or

What is one way that nutritional diseases are different than those caused by pathogens like bacteria or viruses?

When a river is dammed, it creates a lake warmer than the river. Explain why it might affect how the fish can breathe and survive there?

Which element is a halogen and has a larger average atomic mass than arsenic (As) ?

A solution of salt (molar mass 90 g mol-1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass. a. Calculate the molality of the solution. b. Calculate the molarity of the solution. c.

How many moles of lithium chloride will be formed by the reaction of chlorine with 0.046 mol of lithium bromide in the following reaction? 2LiBr (aq) + Cl2 (g) → 2LiCl (aq) + Br2 (l) ans: 0.046 mol LiCl

Calculate the formula mass for each compound. a. NO2 b. C4H10 c. C6H12O6 60. Calculate the formula mass for each compound. a. MgBr2 b. HNO2 c. CBr4 d. Cr (NO3) 3

How many electrons will calcium gain or lose when it forms an ion?

Which statement describes thermal energy? the energy that is associated with electric fields the energy that is stored in chemical bonds the energy that is associated with the pull of gravity the energy that is associated with temperature

Give the formula %error = theoretical value - experimental value / theoretical value * 100 calculate the percent error for the experiment.

A baker touches a pie right after taking it out that of me which statement best explains why the pie feels hot